Wood stain and process of making same



PATENT orrics.

KARL WESSEL, on ST. PAUL, MINNESOTA.

. WOOD STAIN AND PROCESS OF MAKING SAME.

No Drawing.

To all whom it may concern:

Be it known that I, KARL WESSEL, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented certain new and useful Improvements in Wood Stains andProcesses of Making Same; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My present invention has for its object to provide a highly efficientand improved wood stain; and to such ends, generally stated, consists ofthe novel process and novel combination of ingredients hereinafterdescribed and defined in the claims.

As a base or chief element for this wood stain, I use what isgenerallyknown as a digester liquor obtained in the treatment of.

flax and other vegetable fibers in closed digesters with caustic soda orlime and soda ash in the presence of steam. The nature of the productwill be made clear by the following description of the process by whichit is made. Of course, the product may be made in any desired quantity,but for illustration, it may be assumed that the first step is performedby taking one thousand gallons of water, one thousand pounds ofvegetable fiber, preferably of flax straw or tow and about thirty poundsof caustic soda and boiling the same for about ten hours more or less ina closed digester of a form commercially well known.

The so called first step of the process is one that is usually performedin the preparation of flax tow and similar fibrous materials priu'iarilyto the use thereof for various commercial purposes, suchas themanufacture of rugs and other flax products. The said first step is alsoperformed in the preparation of flax and other vegetable fibers for usein making coarse articles, such as heat insulating material.

Specification of Letters Patent.

Patented Jan. 3,1922.

Application filed April 11, 1918. Serial No. 227,973.

As a second step of the process, I mix into the above digester liquorabout twenty or twenty five per cent of the caustic soda and about fiveper cent ofalcohol, preferably of wood alcohol.

As a third step of the process, I mix into this liquor finely groundcoloring material preferably a dry powdered mineral paint and the liquidmixture is then thoroughly commingled by agitation. The product obtained is a very low cost and highly efficient wood stain; Of course,the amount of mineral coloring matter and the coloror character thereofwill dependon the color shade desired in the stain.

Of course, the proportions of the ingredients named may be varied. Ihave obtained good results by the use of approximately five per cent ofcaustic soda in proportion to the amount of water. In lieu of causticsoda, I find that I can use soda ash and lime in the proportions, inrespect to each other,

of three per cent of the former with five per cent of the latter.

What I claim is:

1. The process of making wood stain which consists in boiling togetherwater,

caustic soda and a vegetable fiber, and in thereafter adding causticsoda thereto.

2. The process of making wood stain which consists in boiling togetherwater, caustic soda and a vegetable fiber, and in thereafter addingcaustic soda and alcohol thereto.

3. A wood stain having as its main body portion a waste digester liquorobtained in the treatment of vegetable fiber, and having caustic sodaand alcohol added thereto.

In testimony whereof I aflix my signature in presence of two witnesses.

KARL 'WESSEL. I

Witnesses CLARA DEMAREST, F. D. MERCHANT.

